.content {
    .banner{
        position: relative;
        height: 550px;
        >img {
            width: 100%;
        }
        >ul {
            position: absolute;
            bottom: -2%;
            left: 43%;
            list-style: none;
            li {
                margin-right: 20px;
                display: inline-block;
                width: 10px;
                height: 10px;
                border-radius: 50%;
                background-color: #a2d2e9;
            }
            li:first-child {
                background-color: #2395cb;
            }
        }
    }
}
